ej6.sean

i have a b18c5 with a jun stage 2 nd with the springs nd so forth..ported head..nd ctr pistons..what size injectors should i get..next year im planning on getting a rmf header, port my im from ib, nd new throttle body

The Si

I will say at least 310cc .

ej6.sean

that would be good bc i got a set just laying around alrdy..im just curious bc i see most people using 370

The Si

Either should be fine, when you get it tuned your mechanic will tell you if your injectors are maxed out on their duty cycles base on your setup but I don't think it will with JunStg2, 310cc should be fine.